Rails migration

http://stackoverflow.com/questions/753919/run-a-single-migration-file

Build a hash from an array

 We need to build a hash, and we need to build it from each element in an array.

Old way

  
def visitors_name_email
  result = {}
  visitors.each do |visitor|
    result[visitor.name] = visitor.email
  end
  result
end

New way

def visitors_name_email
  visitors.inject({}) do |result, visitor|
    result.merge(visitor.name => visitor.email)
  end
end

How to Find Where Ruby Methods are Defined

https://coderwall.com/p/xuefia

Resque

Check in rails console
   Resque.info 

Rails Sunspot/Solr returning result for single character searches

http://www.steveroot.co.uk/2013/07/rails-sunspotsolr-returning-result-for-single-character-searches/

http://stackoverflow.com/questions/12088938/solrquery-does-not-returns-results-for-less-than-3-characters

Noty is a Jquery plugin that makes it easy to create alert, success, error, warning etc....

Noty  is  a Jquery plugin that makes it easy to create alert, success, error, warning etc....

http://needim.github.io/noty/

Difference b/w library and framework

Libraries just fit into your existing architecture and add a specific functionality whereas a Framework gives you an architecture and you will need to follow the rules. 

To make it simpler for you – Backbone and Knockout are JavaScript libraries and Ember and AngularJS are frameworks.